80720716 has 6 divisors (see below), whose sum is σ = 141261260. Its totient is φ = 40360356.

The previous prime is 80720711. The next prime is 80720719. The reversal of 80720716 is 61702708.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (80720711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10090086 + ... + 10090093.

Almost surely, 2^80720716 is an apocalyptic number.

It is an amenable number.

80720716 is a deficient number, since it is larger than the sum of its proper divisors (60540544).

80720716 is a wasteful number, since it uses less digits than its factorization.

80720716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20180183 (or 20180181 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 80720716 is about 8984.4708247064. The cubic root of 80720716 is about 432.1770179324.

The spelling of 80720716 in words is "eighty million, seven hundred twenty thousand, seven hundred sixteen".